Techniques for assessing the impact of structural barriers on fish passage and for prioritising
restoration actions are reviewed. Current survey methodologies are biased towards specific …

Man‐made barriers such as dams affect the movement of aquatic species, reducing gene
flow and genetic variability. Such encroachments may also lead to selective changes in life …

Since the publication of The Migrations of Fish by Prof. Alexander Meek in 1916, a number
of books have been published on this subject. However, most of these books only cover one …

Man-made, physical barriers have disrupted longitudinal connectivity for migratory fish in
many river systems throughout the world for centuries. These barriers are considered to be a …

The presence of small weirs, far more numerous than dams, has increased habitat
fragmentation on rivers worldwide. This study aims to evaluate the upstream passage …

Abstract Knowledge of the location, physical attributes and impacts of obstacles on river
connectivity is a requirement for any mitigating action aimed at restoring the connectivity of a …

Brown trout (Salmo trutta) were introduced to New Zealand by acclimatisation societies from
the 1860s onwards in efforts to establish recreational fisheries. These early liberations were …

In situ fixed acoustic telemetry methods make it possible to study simultaneously the detailed
movements of individual fish and their relationship to the environment, but the properties of …

Worldwide, rivers are extensively fragmented by anthropogenic structures, reducing
longitudinal connectivity, inhibiting migration and leading to severe declines in many fish …

While many studies provide microscale relationships between fish and habitat
characteristics, studies covering longer river reaches are scarce. Modern remote sensing …